Time-Dependent Shear Deformation Characteristics of Sand and their Constitutive Modelling

Di, Benedetto Herve; Tatsuoka, Fumio; Ishihara, Masanori

doi:10.3208/sandf.42.2_1

Cited by 155 publications

(31 citation statements)

References 13 publications

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“…Di Benedetto et al (2002) successfully simulated the rate dependent stress-strain behaviour of geomaterial observed in a number of laboratory stress-strain tests by the non-linear three-component model ( Figure 1) using one-dimensional case. Figure 2 illustrates the P&N viscosity type (Tatsuoka et al, 2008b) In this type of viscosity the viscous stress increment that developed at a given moment during subsequent loading, decays with an increase in instantaneous irreversible strain towards different residual values.…”

Section: Materials Model Descriptionmentioning

confidence: 97%

“…Journal of the National Science Foundation of Sri Lanka 44 (2) There are many commercially available FEM software today. Among them ABAQUS is the robust software that allows the user to model their own material model using user subroutine.…”

Section: June 2016mentioning

confidence: 99%

“…clay, sand, gravel, and sedimentary soft rock), a set of stressstrain models within the framework of the general non-linear three-component model has been proposed by researchers (Di Benedetto et al, 2002). Three basic viscosity types have been published which are (i) Isotach, (ii) TESRA (temporary effects of strain rate and acceleration) or Viscous Evanescent and (iii) P&N (positive and negative viscosity).…”

Section: Introductionmentioning

confidence: 99%

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Finite element simulation of the effect of loading rate on the stress-strain behaviour of Albany sand

Muntakim¹,

Siddiquee²,

Udagepola³

2016

J. Natn. Sci. Foundation Sri Lanka

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Abstract:In this research, the effect of strain rate on Albany sand has been studied by elastic visco-plastic constitutive model within the framework of three component model. Strain rate effect can be modelled by using any one of the (i) Isotach, (ii) TESRA (temporary effects of strain rate and acceleration) or Viscous Evanescent and (iii) P&N (positive and negative viscosity) models of the three component framework. Usually 'Isotach' is appropriate for clay and soft rock, 'TESRA' for sand and 'P&N' is appropriate for sand with less angularity like Albany sand. In this research triaxial compression (TC) test results of Albany sand at different strain rates have been modelled successfully into a commercially available package called 'ABAQUS'. The P&N model was implemented into a generalised elasto-plastic isotropic strain-hardening non-linear model in C++. The model was then embedded in the finite element computer programme ABAQUS, which was used for the actual analysis. In order to define the P&N model user subroutine of ABAQUS 'UMAT' was written in C++ and used hereafter. ABAQUS is a robust FEM software that allows writing subroutines for describing different material behaviour. Generally UMAT is written in FORTRAN but in this study the main model is written in C++ and then it is called by FORTRAN with appropriate change in ABAQUS environment file. The effect of strain rate on the stress-strain behaviour of Albany sand has been modelled by using the TESRA model with the help of user subroutine UMAT of commercially available FEM software ABAQUS.

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Section: Materials Model Descriptionmentioning

confidence: 97%

Section: June 2016mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Finite element simulation of the effect of loading rate on the stress-strain behaviour of Albany sand

Muntakim¹,

Siddiquee²,

Udagepola³

2016

J. Natn. Sci. Foundation Sri Lanka

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“…where g v ð_ e ir Þ is the viscosity function. According to Di Benedetto et al [39] and Tatsuoka et al [40], it can be expressed as for geomaterials:…”

Section: Isotach Viscositymentioning

confidence: 99%

“…And an opposite behavior occurs immediately after a step decrease in the strain rate exhibiting load-undershooting. Di Benedetto et al [39] and Tatsuoka et al [40] pointed out that decay of the viscous load component described previously can be accurately modeled by the following TESRA viscosity component:…”

Section: Tesra Viscositymentioning

confidence: 99%

Effects of loading rate on viscoplastic properties of polymer geosynthetics and its constitutive modeling

Peng

Tan

et al. 2009

Polymer Engineering & Sci

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On the basis of the special tensile test results under various loading histories, the rate‐dependent behaviors of three polymer geosynthetics due to their viscous properties have been investigated. All the investigated polymer geosynthetics show significant loading rate effects, creep deformation, and stress relaxation. Except for the polyester geogrid showing the combined viscosity, all the investigated polymer geosynthetics exhibit the isotach viscosity. An elasto‐viscoplastic constitutive model described in a nonlinear three‐component model framework is developed to simulate the rate‐dependent behaviors of polymer geosynthetics. The developed constitutive model is verified by comparing its simulated results with the experimental data of polymer geosynthetics presented in this study and those available from the literature. The comparison indicates that the developed model can reasonably interpret the rate‐dependent behaviors of polymer geosynthetics under arbitrary loading histories, including the step‐changed strain rate loading, creep, and stress relaxation applied during otherwise monotonic loading (ML). POLYM. ENG. SCI., 2010. © 2009 Society of Plastics Engineers

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Modelling the time‐dependent behaviour of granular material with hypoplasticity

Wang

Yin

et al. 2018

Num Anal Meth Geomechanics

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Summary This paper presents a constitutive model for time‐dependent behaviour of granular material. The model consists of 2 parts representing the inviscid and viscous behaviour of granular materials. The inviscid part is a rate‐independent hypoplastic constitutive model. The viscous part is represented by a rheological model, which contains a high‐order term denoting the strain acceleration. The proposed model is validated by simulating some element tests on granular soils. Our model is able to model not only the non‐isotach behaviour but also the 3 creep stages, namely, primary, secondary, and tertiary creep, in a unified way.

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Time-Dependent Shear Deformation Characteristics of Sand and their Constitutive Modelling

Cited by 155 publications

References 13 publications

Finite element simulation of the effect of loading rate on the stress-strain behaviour of Albany sand

Finite element simulation of the effect of loading rate on the stress-strain behaviour of Albany sand

Effects of loading rate on viscoplastic properties of polymer geosynthetics and its constitutive modeling

Modelling the time‐dependent behaviour of granular material with hypoplasticity

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